PolygonMesh.java

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package eu.mihosoft.vrl.v3d.ext.openjfx.shape3d;
 
import javafx.collections.FXCollections;
import javafx.collections.ObservableFloatArray;
import javafx.collections.ObservableIntegerArray;
 
// TODO: Auto-generated Javadoc
public class PolygonMesh {
    
    private final ObservableFloatArray points = FXCollections.observableFloatArray();
    
    private final ObservableFloatArray texCoords = FXCollections.observableFloatArray();
    
    public int[][] faces = new int[0][0];
    
    private final ObservableIntegerArray faceSmoothingGroups = FXCollections.observableIntegerArray();
    
    protected int numEdgesInFaces = -1; // TODO invalidate automatically by listening to faces (whenever it is an observable)
 
    public PolygonMesh() {}
 
    public PolygonMesh(float[] points, float[] texCoords, int[][] faces) {
        this.points.addAll(points);
        this.texCoords.addAll(texCoords);
        this.faces = faces;
    }
 
    public ObservableFloatArray getPoints() {
        return points;
    }
    
    public ObservableFloatArray getTexCoords() {
        return texCoords;
    }
    
    public ObservableIntegerArray getFaceSmoothingGroups() {
        return faceSmoothingGroups;
    }
     
    public int getNumEdgesInFaces() {
        if (numEdgesInFaces == -1) {
            numEdgesInFaces = 0;
            for(int[] face : faces) {
                numEdgesInFaces += face.length;
            }
           numEdgesInFaces /= 2;
        }
        return numEdgesInFaces;
    }
    
    // TODO: Hardcode to constants for FX 8 (only one vertex format)
    private static final int NUM_COMPONENTS_PER_POINT = 3;
    
    private static final int NUM_COMPONENTS_PER_TEXCOORD = 2;
    
    private static final int NUM_COMPONENTS_PER_FACE = 6;
 
    public int getPointElementSize() {
        return NUM_COMPONENTS_PER_POINT;
    }
 
    public int getTexCoordElementSize() {
        return NUM_COMPONENTS_PER_TEXCOORD;
    }
 
    public int getFaceElementSize() {
        return NUM_COMPONENTS_PER_FACE;
    }
}